Do NOT attend MSIH!
The school recently announced that Columbia has lost its affiliations with St. Lukes Roosevelt. This matters because when your fouth year comes, the VAST majority of your rotations through Columbia are done at SLR. SLR had the most availabilities and variety of rotations by far. When I was a MS4, I have no idea what I would have done if SLR electives were not available to me. With the loss of SLR, 4th year students will not be able to enroll in the US electives they have been repeatedly told will be there for them when the get to their fourth year.
The school is an awful place in so many ways but this is maybe the most serious threat to its students' chances to succeed.
If you have ANY other options for medical school consider them first.